added notion of driver and refactored data access
Merge branch 'driver'
Added Key.has
making driver available through Dataset and Workspace interfaceS
fixing spelling
rename Vector to VectorData
initial support for parsing/encoding crs as wkt
ensuring Cursors.size and Cursors.extent closes underlying cursor
replaced Features.schema with SchemaBuilder
Merge branch 'proj_wkt'
Merge branch 'master' into postgis
added extended properties to field
Removed Option class, replaced with Key, and renamed Query.properties to Query.fields
cleaned up some javadocs
added Version util class
Replaced simple log implementation with jdk implementation
added PostGIS driver
cleaned up loggers
cleaned up imports
implemented Proj.toWKT/fromWKT